Convert Certificate from PEM to DER

Convert a PEM formatted certificate file (.cer, .crt, .pem) to DER format (.cer, .der). The Chilkat certificate class/object is a freeware component that is included in many of the Chilkat downloads.

Download Chilkat .NET for 2.0 Framework

Download Chilkat .NET for 1.0 / 1.1 Framework

Dim cert As New Chilkat.Cert()

Dim success As Boolean

'  LoadFromFile will load either PEM and DER formatted files.
'  It automatically recognizes the file format based on the
'  file contents.
success = cert.LoadFromFile("chilkat.crt")
If (success <> true) Then
    MsgBox(cert.LastErrorText)
    Exit Sub
End If


MsgBox(cert.SubjectDN)

success = cert.ExportCertDerFile("chilkat.der")
If (success <> true) Then
    MsgBox(cert.LastErrorText)
    Exit Sub
End If


MsgBox("success!")